Sinuosity-driven hyporheic exchange in meandering rivers
Sinuosity-driven hyporheic exchange in meandering rivers
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DOI：
10.1029/2006gl027630
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发表时间：
2006-09-27
影响因子：
5.2
通讯作者：
Ridolfi, Luca
中科院分区：
文献类型：
--
作者：
Boano, Fulvio;Camporeale, Carlo;Ridolfi, Luca
提出了一个曲流区内潜流交换通量的计算模型。该方法依赖于基于物理的地貌动力学模型来预测蜿蜒河流的流场特征及其平面测量的时间演变。因此，可以计算出由河流弯曲度引起的曲流尺度上的潜流通量。模式在模拟个例中的应用表明，河流平面测量对曲流河尺度的潜流交换模式具有基础性作用，并对潜流交换的长期演变产生影响。
A model for the evaluation of the intra- meander hyporheic exchange fluxes is presented. The method relies on a physically- based morphodynamic model to predict the characteristics of the flow field in a meandering river and the temporal evolution of its planimetry. The hyporheic fluxes induced at the meander scale by the river sinuosity can therefore be computed. The application of the model to a simulated case has shown the fundamental role of the river planimetry on the hyporheic exchange pattern at the meander scale, and its influence on the long- term evolution of the hyporheic exchange.